Pyxis ST-500RO Inline PTSA Sensor for Reverse Osmosis
Inline PTSA sensor for RO systems (0-40ppb). 4-20mA + RS-485, 7-pin.
Pyxis ST-500RO Inline PTSA Sensor for Reverse Osmosis
The Pyxis ST-500RO is an inline PTSA fluorometer designed for reverse osmosis antiscalant tracer dosing applications, measuring inhibitor concentration across a 0-40ppb range. It tracks inhibitor dose in fluorescence-traced water treatment programmes and outputs via 4-20mA analog and RS-485 Modbus through a 7-pin connector.
Description
The Pyxis ST-500RO is an inline PTSA fluorometer purpose-built for reverse osmosis antiscalant tracer dosing applications, measuring inhibitor concentration across a 0-40ppb range.
This narrower, RO-matched range gives operators of RO plants a precise, real-time check that antiscalant dosing is tracking correctly ahead of the membranes, helping protect against scale formation.
It tracks inhibitor dose in fluorescence-traced water treatment programmes and outputs via 4-20mA analog and RS-485 Modbus through a 7-pin connector for integration with plant control systems.
Why Use This
Purpose-Built for RO Systems
The 0-40ppb range is calibrated for reverse osmosis antiscalant tracer dosing rather than general cooling water programmes.
Real-Time Dose Verification
Continuous PTSA fluorescence measurement confirms antiscalant tracer concentration is being maintained at the target dose.
Simple Control Integration
4-20mA analog and RS-485 Modbus outputs through a 7-pin connector allow straightforward wiring into a PLC or SCADA system.
Applications
- Reverse osmosis antiscalant tracer dosing — confirms dosing is reaching target ahead of RO membranes
- Scale prevention monitoring in RO pretreatment
- PLC/SCADA-integrated dose control on RO trains
FAQ
What water treatment application is this sensor designed for?
The ST-500RO is designed for reverse osmosis antiscalant tracer dosing applications.
Why is the measurement range narrower than other PTSA sensors in the range?
The 0-40ppb range is matched to typical RO antiscalant dosing levels, which are lower than the general inhibitor dosing programmes other ST-500 variants cover.
How does it output measurements to plant controls?
Output is via 4-20mA analog and RS-485 Modbus through a 7-pin connector.
Is this sensor suitable for sea water RO systems?
This standard version is intended for general RO service; the ST-500RO-Ti variant with a titanium solution ground is the option built specifically for sea water RO systems.
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